The synthesis, NMR (1H,13C,119Sn) and IR spectral studies of some di- and tri-organotin(IV) sulfonates: X-ray crystal structure of [(n-C4H9)2Sn(OSO2C6H4CH3-4)2·2H2O]

2003 ◽  
Vol 17 (8) ◽  
pp. 607-615 ◽  
Author(s):  
Ramesh Kapoor ◽  
Anand Gupta ◽  
Pratibha Kapoor ◽  
Paloth Venugopalan
Keyword(s):  
Crystal Structure ◽  
Spectral Studies ◽  
X Ray

Systhesis, Characterization and Spectroscopic Properties of (2E,6E)-2,6-Bis(2,3,4-tri-methoxy-benzylidene)cyclohexanone

2011 ◽  
Vol 396-398 ◽  
pp. 2338-2341
Author(s):  
Xing Chuan Wei ◽  
Zhi Li Liu ◽  
Kun Zhang ◽  
Zhi Yun Du ◽  
Xi Zheng
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Spectroscopic Properties ◽  
Spectral Studies ◽  
Double Bonds ◽  
X Ray ◽  
Π Interactions ◽  
X Ray Crystallography

In this paper, (2E,6E)-2,6-Bis(2,3,4-tri-methoxy -benzylidene)cyclohexanone (omitted as tmbcho) (1) was obtained by the reaction of acetic acid, tetrahydrofuran, cyclohexanone and 2,3,4-tri-methoxy-benzaldehyde. Three non-classic hydrogen bonds were observed in the compound. X-ray crystallography shows that the crystal structure is stabilized by intermolecular C-H•••π interactions and it contains plenty of conjugated double bonds. The title compound was characterized by UV-vis and fluorescent spectral studies.

Preparation, spectral studies and X-ray crystal structure of 1,3,5-triphenyl-1,5-pentanedione, C23H20O2

1994 ◽  
Vol 24 (8) ◽  
pp. 511-515 ◽  
Author(s):  
G. C. Das ◽  
M. B. Hursthouse ◽  
K. M. A. Malik ◽  
M. M. Rahman ◽  
M. T. Rahman ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Spectral Studies ◽  
X Ray

scholarly journals Synthesis, Spectroscopic, Thermal and X-Ray Structure of Aminoguanidinium and Hydrazinium Uranyl Trichloroacetates

2019 ◽  
Vol 31 (3) ◽  
pp. 591-596
Author(s):  
T.M. Ahamed Hussain ◽  
B.N. Sivasankar
Keyword(s):  
Crystal Structure ◽  
Aqueous Media ◽  
Spectral Studies ◽  
Nitrate Anion ◽  
Structural Morphology ◽  
Uranyl Complexes ◽  
X Ray ◽  
Ionic Nature ◽  
Uranyl Cation ◽  
Final Residue

New aminoguanidinium and hydrazinium uranyl complexes of trichloroacetate with formulae H2(HAgun)2[UO2(Cl3COO)5](NO3 ) (1) and (N2H5)[UO2(Cl3COO)3] (2) where HAgun is aminoguanidinium cation have been prepared in aqueous media and charaterized by analytical, spectral, thermal and X-ray crystallographic studies. The electronic spectra of the complexes confirm the presence of uranyl cation in the molecules. The infrared spectra of the complexes show the N-N stretching frequency of aminoguanidinium in the range of 1100 cm-1 and for hydrazinium in the range of 970 cm-1 conforming their ionic nature. The simultaneous TG-DTA of both the complexes show two step degradation to yield U3O8 as the final residue which was confirmed by X-ray powder diffraction. The structural morphology of U3O8 has been studied by SEM technique. The crystal structure of compound1 reveals seven coordination around uranium with pentagonal bipyramidal geometry. Aminoguanidinium cations and nitrate anion are present outside the coordination sphere as charge compensating species. However, for hydrazine complex hexagonal bipyramidal geometry has been assigned on the basis of analytical and spectral studies.

Synthesis, spectral studies and X-ray crystal structure of N,N′-(±)-trans-1,2-cyclohexylenebis(3-ethoxysalicylideneamine) H2(t-3-EtOsalchxn)

2008 ◽  
Vol 876 (1-3) ◽  
pp. 110-120 ◽  
Author(s):  
Érica Tozzo ◽  
Sandra Romera ◽  
Mirian P. dos Santos ◽  
Marcia Muraro ◽  
Regina H. de A. Santos ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Spectral Studies ◽  
X Ray

scholarly journals DNA Binding Test, X-Ray Crystal Structure, Spectral Studies, TG-DTA, and Electrochemistry of [CoX2(dmdphphen)] (Dmdphphen Is 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline, X = Cl, and NCS) Complexes

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Mousa Al-Noaimi ◽  
Mohammed Suleiman ◽  
Hany W. Darwish ◽  
Ahmed H. Bakheit ◽  
Muneer Abdoh ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Cyclic Voltammetry ◽  
Elemental Analysis ◽  
Mixed Ligand ◽  
Spectral Studies ◽  
X Ray Diffraction ◽  
X Ray ◽  
Tetrahedral Environment ◽  
One Step ◽  
Ct Dna

Two new neutral mixed-ligand cobalt(II) complexes, [CoCl2(dmdphphen)]1and [Co(NCS)2(dmdphphen)]  2, where dmdphphen is 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, were synthesized and characterized by an elemental analysis, UV-Vis, IR, TG/DTA, cyclic voltammetry CV, and single X-ray diffraction. Complex2crystallized as monoclinic with a space group P21/c. Co(II) ions are located in a distorted tetrahedral environment. TG/DTA result shows that these complexes are very stable and decomposed through one-step reaction. The two complexes exhibit a quasireversible one-electron response at −550 and 580 mV versus Cp2Fe/Cp2Fe+, which has been assigned to Co(I)/Co(II) and Co(II)/Co(III) couples. Absorption spectral studies reveal that such complexes exhibit hypochromicity during their interaction with CT-DNA.

Studies on Metal Carboxylates. Part II. Cobalt(II) and Nickel(II) Complexes of Certain Pyridine Carboxylic Acids and Pyridine-3-Sulfonic Acid: Magnetic and Spectral Studies

1972 ◽  
Vol 50 (9) ◽  
pp. 1307-1314 ◽  
Author(s):  
A. Anagnostopoulos ◽  
R. W. Matthews ◽  
R. A. Walton
Keyword(s):  
Crystal Structure ◽  
Carboxylic Acid ◽  
Sulfonic Acid ◽  
Spectral Studies ◽  
Metal Carboxylates ◽  
Carboxylate Complexes ◽  
X Ray ◽  
Structural Details ◽  
Pyridine Carboxylic ◽  
Pyridine Carboxylate

Several pyridine carboxylate complexes of cobalt(II) and nickel(II) have been prepared and their spectral and magnetic properties and X-ray powder patterns used to establish their stereochemistry. The cobalt(II) complex of pyridine-3-carboxylic acid Co[3-py(CO2)]2•4H2O, whose crystal structure we have previously reported, was used as a model for a consideration of the structural details of these complexes. Like the latter cobalt(II) derivative, the nickel(II) complex of pyridine-3-carboxylic acid and the cobalt(II) and nickel(II) complexes of pyridine-4-carboxylic acid and pyridine-3-sulfonic acid, isolated as their tetrahydrates, are formulated as non-classical zwitterions. Comparisons are made with the related pyridine carboxylate complexes of silver(II).

scholarly journals Synthesis and Spectral Studies of Some Zn(II) Complexes with Substituted N,N-Donor Ligands Derived from Pyridine-2-carbaldehyde

2019 ◽  
Vol 32 (1) ◽  
pp. 122-126 ◽  
Author(s):  
Shiva Lall Sunar ◽  
Keisham Surjit Singh ◽  
Sajal Kundu
Keyword(s):  
Crystal Structure ◽  
Spectral Analysis ◽  
Emission Spectra ◽  
Spectroscopic Properties ◽  
Octahedral Geometry ◽  
Water Soluble ◽  
Donor Ligands ◽  
Spectral Studies ◽  
X Ray ◽  
Uv Visible

A series of four neutral zinc complexes with substituted N,N-donor ligands viz. Ln = (E)-N-(pyridin-2-ylmethylene)anilines of composition [Zn(NO3)2(L1)] (1), [Zn(NO3)2L2] (2), [Zn(NO3)2L3] (3), [Zn(NO3)2L4] (4) were synthesized and characterized. The spectroscopic properties of the Zn(II) complexes were studied by UV-visible, fluorescence, IR and 1H NMR spectral analysis. All the zinc(II) complexes are water soluble and non-electrolyte in solution. Efforts for getting single crystals suitable for X-ray crystal structure could not be achieved. However, on the basis of spectral studies, compounds 1-4 are proposed to have octahedral geometry. The emission spectra of all the complexes show π-π* (intra-ligand) transition.

scholarly journals Synthesis, Spectroscopic Characterization and Antibacterial Activity of Organotin(IV) Complexes Containing Hydrazone Ligand: X-ray Single Crystal Structure of [n-Bu2Sn(H2PAI).H2O]

2009 ◽  
Vol 1 (2) ◽  
pp. 306-316 ◽  
Author(s):  
M. A. Affan ◽  
B. A. Fasihuddin ◽  
Y. Z. Liew ◽  
S. W. Foo ◽  
J. Ismail
Keyword(s):  
Crystal Structure ◽  
Antibacterial Activity ◽  
Pyruvic Acid ◽  
Chelating Agent ◽  
Antimicrobial Activities ◽  
Absolute Methanol ◽  
Spectral Studies ◽  
Distorted Octahedral Geometry ◽  
Hydrazone Ligand ◽  
X Ray

Five new organotin(IV) complexes with pyruvic acid isonicotinoyl hydrazone [H4PAI (1)] of the general formula [Me2Sn(H2PAI)] (2), [R2Sn(H2PAI).H2O] [R=n-Bu, (3) or Ph, (4)], [RSnCl(H2PAI).H2O] [R=Me (5) or Ph (6)] have been synthesized in the presence of base in absolute methanol in 1:2:1 mole ratio (metal:base:ligand). All organotin(IV) complexes are characterized by elemental analyses, molar conductance values, UV-Visible, IR and 1H NMR spectral studies. The crystal structure of organotin(IV) complex (3) has also been determined by X-ray crystallography diffraction analyses. Complex [n-Bu2Sn(H2PAI).H2O] (3) is orthorhombic with space group P2(1)/c with a=27.517(5), b=9.6574(18), c=15.742(3) Å, α=90°, β=90°, γ=90°, V=4183.4(13) Å3, Z=8 and Dcalc=1.448 mg m-3. The complex [n-Bu2Sn(H2PAI).H2O] (3) shows a distorted octahedral geometry with coordination for the central tin(IV) atom and exhibits two monomeric structures in one unit cell. In the complex (3), the pyruvic acid isonicotinoyl hydrazone ligand is coordinated to the tin(IV) as dinegative tridentate chelating agent via the carboxylic-O, enolic-O and imine-N atoms. Hydrazone ligand (1) and its organotin(IV) complexes have also been screened for their antimicrobial activities and found to be relatively active.Keywords: Organotin(IV) complexes; Hydrazone ligand; Spectral studies; Crystal structure; Antibacterial activity.© 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i2.1775

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